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Synthesis, Crystal Structure and Vibrational Spectra of Barium Cyclotetraphosphate Hydrate Ba 2 (P 4 O 12 )∙3.5H 2 O
Author(s) -
Höppe Henning A.,
Kazmierczak Karolina,
Daub Michael
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900447
Subject(s) - barium , hydrate , crystallography , crystal structure , pentoxide , chemistry , materials science , inorganic chemistry , vanadium , organic chemistry
Barium tetrametaphosphate hydrate Ba 2 (P 4 O 12 )∙3.5H 2 O was synthesized as a single‐phase crystalline powder starting from an aqueous solution of barium hydroxide and phosphorus pentoxide at 300 K. Ba 2 (P 4 O 12 )∙3.5H 2 O crystallizes in a new structure type in which the Ba 2+ ions form a distorted hexagonal diamond‐like arrangement with the (P 4 O 12 ) 4– anions in the trigonal prismatic voids (Ba 2 (P 4 O 12 )∙3.5H 2 O, C 2/ c , Z = 4, a = 777.3(2), b = 1297.6(2), c = 1346.1(3) pm, b = 95.38(2)°, wR 2 = 0.071, R 1 = 0.018, 1180 reflections, 118 parameters). The vibrational spectra of Ba 2 (P 4 O 12 )∙3.5H 2 O and its thermal behavior up to 720 K are also reported.